Electromagnetic Induction
... • The closer the lines are together the stronger the field • Magnetic domains are microscopic magnetic field lines caused from the movement of electrons • Domains line up when external magnetic field is present • Magnetic field lines per area is called magnetic flux ...
... • The closer the lines are together the stronger the field • Magnetic domains are microscopic magnetic field lines caused from the movement of electrons • Domains line up when external magnetic field is present • Magnetic field lines per area is called magnetic flux ...
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Physics 10-06 Motional emf and Magnetic Damping
... Since the _______________ can move they are ___________ to one end of the rod leaving _____________ charges at the other end. If there was a _______________ connecting the _______________ of the rod, the electrons would flow through the _______________ to get back to the _______________ charges. o T ...
... Since the _______________ can move they are ___________ to one end of the rod leaving _____________ charges at the other end. If there was a _______________ connecting the _______________ of the rod, the electrons would flow through the _______________ to get back to the _______________ charges. o T ...
Magnetic field lines
... This force has a maximum value when the charge moves perpendicularly to the magnetic field lines This force is zero when the charge moves along the field lines ...
... This force has a maximum value when the charge moves perpendicularly to the magnetic field lines This force is zero when the charge moves along the field lines ...
Magnetism
... lined up in the same direction. • Any magnetized object produces a magnetic field. The magnetic field is the area around the magnet where the magnetic force can be felt. ...
... lined up in the same direction. • Any magnetized object produces a magnetic field. The magnetic field is the area around the magnet where the magnetic force can be felt. ...
Jan31
... • Electric charges act as sources for generating electric fields. In turn, electric fields exert forces that accelerate electric charges • Moving electric charges constitute electric currents. Electric currents act as sources for generating magnetic fields. In turn, magnetic fields exert forces that ...
... • Electric charges act as sources for generating electric fields. In turn, electric fields exert forces that accelerate electric charges • Moving electric charges constitute electric currents. Electric currents act as sources for generating magnetic fields. In turn, magnetic fields exert forces that ...
Lecture22
... •Ampere’s law says that if we take the dot product of the field and the length element and sum up (i.e. integrate) over a closed loop, the result is proportional to the current through the surface •This is not quite the same as gauss’s law ...
... •Ampere’s law says that if we take the dot product of the field and the length element and sum up (i.e. integrate) over a closed loop, the result is proportional to the current through the surface •This is not quite the same as gauss’s law ...
Magnetic field
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter (symbol: A·m−1 or A/m) in the SI. B is measured in teslas (symbol:T) and newtons per meter per ampere (symbol: N·m−1·A−1 or N/(m·A)) in the SI. B is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin. In special relativity, electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative velocity of the observer and charge. In quantum physics, the electromagnetic field is quantized and electromagnetic interactions result from the exchange of photons.In everyday life, magnetic fields are most often encountered as a force created by permanent magnets, which pull on ferromagnetic materials such as iron, cobalt, or nickel, and attract or repel other magnets. Magnetic fields are widely used throughout modern technology, particularly in electrical engineering and electromechanics. The Earth produces its own magnetic field, which is important in navigation, and it shields the Earth's atmosphere from solar wind. Rotating magnetic fields are used in both electric motors and generators. Magnetic forces give information about the charge carriers in a material through the Hall effect. The interaction of magnetic fields in electric devices such as transformers is studied in the discipline of magnetic circuits.